4 #define RETRANS_TIMER HZ
6 #define MAX_RTR_SOLICITATIONS 3
7 #define RTR_SOLICITATION_INTERVAL (4*HZ)
9 #define MIN_VALID_LIFETIME (2*3600) /* 2 hours */
11 #define TEMP_VALID_LIFETIME (7*86400)
12 #define TEMP_PREFERRED_LIFETIME (86400)
13 #define REGEN_MAX_RETRY (5)
14 #define MAX_DESYNC_FACTOR (600)
16 #define ADDR_CHECK_FREQUENCY (120*HZ)
18 #define IPV6_MAX_ADDRESSES 16
25 #if defined(__BIG_ENDIAN_BITFIELD)
29 #elif defined(__LITTLE_ENDIAN_BITFIELD)
34 #error "Please fix <asm/byteorder.h>"
40 struct in6_addr prefix;
46 #include <linux/in6.h>
47 #include <linux/netdevice.h>
48 #include <net/if_inet6.h>
50 #define IN6_ADDR_HSIZE 16
52 extern void addrconf_init(void);
53 extern void addrconf_cleanup(void);
55 extern int addrconf_add_ifaddr(void __user *arg);
56 extern int addrconf_del_ifaddr(void __user *arg);
57 extern int addrconf_set_dstaddr(void __user *arg);
59 extern int ipv6_chk_addr(struct in6_addr *addr,
60 struct net_device *dev,
62 extern struct inet6_ifaddr * ipv6_get_ifaddr(struct in6_addr *addr,
63 struct net_device *dev,
65 extern int ipv6_get_saddr(struct dst_entry *dst,
66 struct in6_addr *daddr,
67 struct in6_addr *saddr);
68 extern int ipv6_dev_get_saddr(struct net_device *dev,
69 struct in6_addr *daddr,
70 struct in6_addr *saddr);
71 extern int ipv6_get_lladdr(struct net_device *dev, struct in6_addr *);
72 extern int ipv6_rcv_saddr_equal(const struct sock *sk,
73 const struct sock *sk2);
74 extern void addrconf_join_solict(struct net_device *dev,
75 struct in6_addr *addr);
76 extern void addrconf_leave_solict(struct inet6_dev *idev,
77 struct in6_addr *addr);
80 * multicast prototypes (mcast.c)
82 extern int ipv6_sock_mc_join(struct sock *sk, int ifindex,
83 struct in6_addr *addr);
84 extern int ipv6_sock_mc_drop(struct sock *sk, int ifindex,
85 struct in6_addr *addr);
86 extern void ipv6_sock_mc_close(struct sock *sk);
87 extern int inet6_mc_check(struct sock *sk, struct in6_addr *mc_addr,
88 struct in6_addr *src_addr);
90 extern int ipv6_dev_mc_inc(struct net_device *dev, struct in6_addr *addr);
91 extern int __ipv6_dev_mc_dec(struct inet6_dev *idev, struct in6_addr *addr);
92 extern int ipv6_dev_mc_dec(struct net_device *dev, struct in6_addr *addr);
93 extern void ipv6_mc_up(struct inet6_dev *idev);
94 extern void ipv6_mc_down(struct inet6_dev *idev);
95 extern void ipv6_mc_init_dev(struct inet6_dev *idev);
96 extern void ipv6_mc_destroy_dev(struct inet6_dev *idev);
97 extern void addrconf_dad_failure(struct inet6_ifaddr *ifp);
99 extern int ipv6_chk_mcast_addr(struct net_device *dev, struct in6_addr *group,
100 struct in6_addr *src_addr);
101 extern int ipv6_is_mld(struct sk_buff *skb, int nexthdr);
103 extern void addrconf_prefix_rcv(struct net_device *dev, u8 *opt, int len);
106 * anycast prototypes (anycast.c)
108 extern int ipv6_sock_ac_join(struct sock *sk,int ifindex,struct in6_addr *addr);
109 extern int ipv6_sock_ac_drop(struct sock *sk,int ifindex,struct in6_addr *addr);
110 extern void ipv6_sock_ac_close(struct sock *sk);
111 extern int inet6_ac_check(struct sock *sk, struct in6_addr *addr, int ifindex);
113 extern int ipv6_dev_ac_inc(struct net_device *dev, struct in6_addr *addr);
114 extern int __ipv6_dev_ac_dec(struct inet6_dev *idev, struct in6_addr *addr);
115 extern int ipv6_chk_acast_addr(struct net_device *dev, struct in6_addr *addr);
118 /* Device notifier */
119 extern int register_inet6addr_notifier(struct notifier_block *nb);
120 extern int unregister_inet6addr_notifier(struct notifier_block *nb);
122 static inline struct inet6_dev *
123 __in6_dev_get(struct net_device *dev)
125 return (struct inet6_dev *)dev->ip6_ptr;
128 extern rwlock_t addrconf_lock;
130 static inline struct inet6_dev *
131 in6_dev_get(struct net_device *dev)
133 struct inet6_dev *idev = NULL;
134 read_lock(&addrconf_lock);
137 atomic_inc(&idev->refcnt);
138 read_unlock(&addrconf_lock);
142 extern void in6_dev_finish_destroy(struct inet6_dev *idev);
145 in6_dev_put(struct inet6_dev *idev)
147 if (atomic_dec_and_test(&idev->refcnt))
148 in6_dev_finish_destroy(idev);
151 #define __in6_dev_put(idev) atomic_dec(&(idev)->refcnt)
152 #define in6_dev_hold(idev) atomic_inc(&(idev)->refcnt)
155 extern void inet6_ifa_finish_destroy(struct inet6_ifaddr *ifp);
157 static inline void in6_ifa_put(struct inet6_ifaddr *ifp)
159 if (atomic_dec_and_test(&ifp->refcnt))
160 inet6_ifa_finish_destroy(ifp);
163 #define __in6_ifa_put(ifp) atomic_dec(&(ifp)->refcnt)
164 #define in6_ifa_hold(ifp) atomic_inc(&(ifp)->refcnt)
167 extern void addrconf_forwarding_on(void);
169 * Hash function taken from net_alias.c
172 static __inline__ u8 ipv6_addr_hash(const struct in6_addr *addr)
177 * We perform the hash function over the last 64 bits of the address
178 * This will include the IEEE address token on links that support it.
181 word = addr->s6_addr32[2] ^ addr->s6_addr32[3];
182 word ^= (word >> 16);
185 return ((word ^ (word >> 4)) & 0x0f);
189 * compute link-local solicited-node multicast address
192 static inline void addrconf_addr_solict_mult(const struct in6_addr *addr,
193 struct in6_addr *solicited)
195 ipv6_addr_set(solicited,
196 __constant_htonl(0xFF020000), 0,
197 __constant_htonl(0x1),
198 __constant_htonl(0xFF000000) | addr->s6_addr32[3]);
202 static inline void ipv6_addr_all_nodes(struct in6_addr *addr)
205 __constant_htonl(0xFF020000), 0, 0,
206 __constant_htonl(0x1));
209 static inline void ipv6_addr_all_routers(struct in6_addr *addr)
212 __constant_htonl(0xFF020000), 0, 0,
213 __constant_htonl(0x2));
216 static inline int ipv6_addr_is_multicast(const struct in6_addr *addr)
218 return (addr->s6_addr32[0] & __constant_htonl(0xFF000000)) == __constant_htonl(0xFF000000);
221 static inline int ipv6_addr_is_ll_all_nodes(const struct in6_addr *addr)
223 return (addr->s6_addr32[0] == htonl(0xff020000) &&
224 addr->s6_addr32[1] == 0 &&
225 addr->s6_addr32[2] == 0 &&
226 addr->s6_addr32[3] == htonl(0x00000001));
229 static inline int ipv6_addr_is_ll_all_routers(const struct in6_addr *addr)
231 return (addr->s6_addr32[0] == htonl(0xff020000) &&
232 addr->s6_addr32[1] == 0 &&
233 addr->s6_addr32[2] == 0 &&
234 addr->s6_addr32[3] == htonl(0x00000002));